Boiler and setting therefor



March 25, 1930. D. s. JACOBUS BOILER AND SETTING THEREFOR Filed NOV. 3, 1924 2 Sheets-Sheet l ATTORNEYS: T

Mai-ch 25, 19308 D. SJACQBUS 151,551

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fl ATTORNEYJH 1 in the specification and will be particu Patented 25, 1930 UNITED STATES PATENT orFica DAVID B. J'AOOIBUS, OI JERSEY CITY, NEW J'ERSE'Y, ASSIGNOB, BY MESNE ASSIGNMENTS,

' '10 FULLER LEEIGE COMPANY, A CORPORATION OF DELAWARE BOILER AND SETTING THEREFOR Application fled November 8, 1924. Serial No. 747,550.

One of the objects of my invention is the provision of novel means for ventilating fur nace walls.

-Other objects of my invention will aplpea'r arly pointed out in the claims. a

My present application is a continuation in partof my application, Serial No. 537,154, which was filed in the Patent Ofiice February 17, 1922, which matured into Patent No. 1,517,291, December 2, 1924.

My invention will best be understood by reference to the accompanying drawings, in which like reference characters indicate like parts, and in which Fig. 1 is a longitudinal section through a boiler and its setting embodying my invention; Fig. 2 is a section taken along the plane of the line 2-2 of Fig. 1, looking in the direction of the arrows; Fig. 3 is a fragmentary vertical section on an enlarged scale of one of the furnace walls illus trated in Fig. 1; Fig. 4 is a sectional plan view of Fig. 3; Fig. 5 is an elevation taken from within the furnace, of a" portion of the furnacewall; Fig. 6 is an elevation of a portion of the furnace wall similar to Fig. 1, but illustrating the special tile members arranged in staggered relation;-Fig. 7 is a sectional plan view taken between the tiles of the inner and outer walls and illustrating a modified arrangement for holding the two walls inspaced arrangement ;Fig. 8 is a vertical section taken along the plane of the line 8-8 in Fig. 7, and looking in the direction of the arrows; Fig. 9 is a plan view of one of the bondin tiles of the outer wall of Figs. 7 and 8; and ig. 10 is a side view of the special tile shown in Fig. 8.

9 Figs. 1 and 2 illustrate a boiler of the series t pe embodying my invention, which is fired y a stoker 83, which is here shown as of the-underfeed type. The gases are directed from the furnace chamber 84 by the roof baflie 85 over the intermediate wall 86, the

gases then passing downwardly over the boiler and superheater tubes 87 and '88, respectively, a chamber 89 above the tubes serving to distribute properly the gases among the various tubes. In the form here shown, the lowermost of the headers 30, and thereby one end of the boiler, is supported on a crosswall 90, which, with the headers, forms the front wall for the flue 91. The lower part of the wall 86 is thickened and forms a shelf, at 86, which comes beneath the rounded ends of the tubes, thus formin a support for the other end of the tubes. rom the flue 91 the gases are directed to the outlet flue 92, dampers 93, operated by connections extending to a point without the boiler, being provided for controlling the flow of the gases. The steam pipe 94 connects the steam space of the steam and water drum 49 to the upper header 95 of the superheater, the outlet pipe-96 for the superheater being connected to the lower header 97.

In accordance with my invention, the air which is to be used in the stoker, or other fuelburning device, is preferably passed over the setting ofthe boiler, in order to utilize any heat radiated thereby and, at the same time, I

to cool the walls.

The furnace wall in the form illustrated in Figs. 1 to 6 is inclined, the outer wall 137 being supported against an air tight metallic casing 139, which is carried by the inclined buckstays139. The outer wall' may be of brickwork as shown in Figs. 3, 4 and 5, or,

in place of the brickwork, a layer of heat resisting and insulating material may be used, as shown in Figs. 1 and 2. While the insulating materal is shown inside of the metallic casing 139 in Figs. 1 and 2 it may be placed on the outside, or it might b ted. 'The inner wall 141 is provided with specially formed tile members 141 horizontally spaced apart, as best shown in Fig. 1,

and which extend outwardly and rest against the outer wall, thereby maintaining the outer andinner walls in spaced relation. It will e omitaratively thin so that .it will be more efectively cooled by the air which is circulated in the space between the two walls, this usually resulting in a thickness which would 5 cause the inner wall if used by itself not to be self-su porting.

Air is orced into the space between the two spaced walls of the sides of the furnace and at the rear of the wall 86 and at the bottom of said space by a fan 106 which takes the. air fromoutside the furnace wall. The air is forced upwardly between the two walls which are located at the sides of the boiler to the top of the setting, it being understood that a vertical partition is provlded between the inner and outer walls, and preferably in alinement with the furnace wall 86, the partition or upper portion of this artition being indicated in Fig. l by the otted line 86". go The air flows over the top of the partition and thence flows downwardly over the sides and fronts of the furnace to the fan107. By circulating the air in the way described, itflows in a generally reverse direction tothe flow of I the hot gases and the cooler air comes in contact with the coolest part of the setting.

From the fan 107 the air passes to the stoker (except for thesmall part which maybe supplied to a cooling device in the side walls by an arrangement not illustrated). By providing two fans, as described, the air may be circulated over the setting without undue leaka e from the wall as the fans maybe 0 erat space between the two walls.

In the arrangement illustratedin Fig. 6, the special tile members 141" are similar to those shown in Fig. l, with the exceptionthat they are arranged in staggered relation.

The modified arrangement illustrated in Figs. 7, 8-, 9 and 10 is particularly applicable for maintaining the inner and outer walls in spaced relation when the walls are vertical. The inner and outer walls are provided with special tile members 130 and 131, respectively, which preferably abut against each other, as indicated. The tile 130 is preferably provided with a groove 130 formed with a vertical shoulder at 132, as best shown in Fig. 8, while the tile member 131 is preferably formed with a groove 133 similar in form to the groove 130 but preferably extending only partially across the tile, as illustrated in Fig. 7 A tie-piece 134 preferabl formed of a tile or other refractory material, is provided on its lower side with a re. cess 135, adapted to engage the inner ends of the tiles, asbest shown in Fig. 8, and having shoulders 136 for engagement with the o0 shoulders formed by the grooves on the two abutting tiles. The construction shown in Figs. 7 and 8 may. be advantageously used for an inclined wall where it is desirable to provide a wider air spacethancanconvenient- 6 1y be secured through the use of the special to give-any desired pressure in t e tile membersin one of the walls. In case the construction is used in connection with walls assisting the maintenance of the setting b cooling the:walls.-

I claim; A

1. An inclined furnace wall comprising an inner wall and an outer wall, both of said walls being substantially fiat, refractory members carried by one of the walls and resting against the other wall and slidable over the surface thereof for maintaining said walls in spaced relation while allowing them to expand relatively to each other in a direction substantially parallel to the planes of the walls.

2. An inclined furnace wall comprising substantially flat inner and outer walls, refractory members carried by the inner wall and resting against the outer wall and slidable over the surface thereof for maintaining said walls in spaced relation while allowing .thus increasing the heat in the .furnace and them to expand relativelyto each other in a walls, the inner wall being supported against the'outer wall by said spacing members.

4. A furnace Wall comprising an outer inclined metallic supporting Wall having a metalliccasing, a wall of refractory heat insulating material resting against said metallic supporting wall, an inner inclined Wall of heat refractory material, and a plurality of refractory spacing members extending between saidwalls, the inner wall being supported against the outer wall by said refractory spacing members.

5. A furnace wall comprising an outer inclined metallic supporting Wall having a metallic casing, a wall of refractory heat insulating material resting against said metallic supporting Wall, an inner inclined Wall of heat refractory material, a plurality of refractory spacing members extending between said walls, the inner wall being supported against the outer wall by'said refractory spacing members, and means for passing air between'said walls and conducting the same to the furnace.

6. A furnace wall comprising an outer inclined metallic supporting wall having a sub stantially flat metallic casing, a substantially flat inner inclined Wall of refractory lteat insulating material resting against said metal-.

clined wall of heat refractory material spaced from said outer Wall, said inner wall being provided with a plurality of special tiles extending from the inner wall to the outer wall and resting against the latter, whereby the inner wall is supported against the outer wall and both Walls being free to move relatively to each other in the planes of the walls.

DAVID S. J ACOBUS. 

